How heavy are the biggest stars in the Universe and how do they compare to the Sun? Why would aliens be grabby? Is there more space for science communicators? What's the minimum size for an object to have an atmosphere? Answering all these questions and more in this week's Q&A show.

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00:00 Start
00:28 [Andoria] How big are the biggest stars?
05:35 [Vulcan] How fast should colonising the Universe happen?
10:27 [Risa] Why would aliens be grabby?
13:51 [Aeturen] The difference between humans and aliens
16:14 [Vendikar] A star approaching us from the Large Magellanic cloud?
20:27 [Remus] Is the scientific discovery process slow?
24:06 [Janus] How do we know what happened before recombination?
28:19 [Cait] Is there more room for science communicators?
33:13 [Betazed] What are my interest outside of space and science?
36:17 [Cheleb] How fast do different galaxies move away from us?
37:38 [Nimbus] How much dark matter is there in our solar system?
38:31 [Belos] How big does an object need to be to hold an atmosphere?

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